{
  "manageEntity": {
    "action": "Save",
    "entityId": "20242265",
    "entityType": "Track",
    "nonce": "0xe2336edaed05d0948a8048b540e64e34fc7b22887d25c02e05e7ee24d374386e",
    "signature": "0xe608db80dd73d0553037369d135e851041003b94a2a64af7bf0df232c77365b02b786bc9535e6bcc97cbb81e212acb1caf306fe9b3814045eb44d0554ab607081c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}